Double-return joist



FIG. 1 is a front, right, top perspective view of a double-return joist showing my design therefor;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front, right, top perspective view of a second embodiment of a double-return joist showing my design therefor;

FIG. 8 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 9 is a front elevational view thereof;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a front, right, top perspective view of a third embodiment of a double-return joist showing my design therefor;

FIG. 14 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 15 is a front elevational view thereof;

FIG. 16 is a rear elevational view thereof;

FIG. 17 is a top plan view thereof;

FIG. 18 is a bottom plan view thereof;

FIG. 19 is a front, right, top perspective view of a fourth embodiment of a double-return joist showing my design therefor;

FIG. 20 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 21 is a front elevational view thereof;

FIG. 22 is a rear elevational view thereof;

FIG. 23 is a top plan view thereof; and,

FIG. 24 is a bottom plan view thereof.

In the figures, broken lines represent break lines of the double-return joist that form no part of the claim. 

CLAIM The ornamental design for a double-return joist, as shown and described. 